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Finding the Fourth Proportional to 360,487.20, 540,730.80 and 313,831.20

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Solution

The fourth proportional to 360,487.20, 540,730.80 and 313,831.20 is: 470,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,487.20 : 540,730.80 = 313,831.20 : x
  2. Step 2: Convert to fraction form
    360,487.20/540,730.80 = 313,831.20/x
  3. Step 3: Cross multiply
    360,487.20x = 540,730.80 × 313,831.20
  4. Step 4: Simplify right side
    360,487.20x = 169,698,195,840.96
  5. Step 5: Solve for x
    x = 169,698,195,840.96/360,487.20
  6. Step 6: Final answer
    x = 470,746.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.